Selective Laser Trabeculoplasty (SLT)

What is SLT?

SLT can be an effective adjunct to medication therapy or used as a primary treatment to reduce or eliminate the need for topical glaucoma medications.

How does it work?

The drainage system of the eye is called the trabecular meshwork. The underlying mechanism of SLT is selective photothermalysis that enables the laser to precisely target pigmented cells within the trabecular meshwork, while not disturbing adjacent non-pigmented cells. The activated cells trigger the body’s normal healing response which helps lower eye pressure.

How is SLT performed?

SLT is an outpatient procedure. You will sit in a conventional exam chair. During the procedure, the doctor will put anesthetic drops in your eye to numb it, and then place a lens on your eye for better viewing. The laser is applied to the trabecular meshwork of the eye. The procedure is generally painless and only takes a few minutes to complete.

Will I feel anything with the laser treatment?

Generally, the laser treatment does not cause pain. However, studies show some patients experience a sensation during treatment. You may see a green flash of light, and feel nothing from the laser. The lens used on your eye may cause some redness or irritation in rare cases.

What can I expect after the laser?

After the laser you may resume all normal activities. You will be prescribed a topical steroid (anti-inflammatory) drop. The drop is used four times a day for four days after the laser. You will have a follow-up visit after four weeks to check the eye pressure.